/* =====================================================================
   WASSAN Foundation — styles
   Palette matched to the WASSAN Foundation logo:
     green (grass) · blue (water drop) · maroon (wordmark) on cream.
   Green is primary, blue is secondary, maroon is the signature accent.
   All colours live here as CSS custom properties, so rebranding is a
   few-line change in :root.
   ===================================================================== */

:root {
  /* Brand palette (sampled from the WASSAN Foundation logo) */
  --green-deep: #125A2A;   /* grass green */
  --green-leaf: #2F8A48;   /* lighter grass */
  --water: #06668A;        /* water-drop blue */
  --maroon: #963066;       /* wordmark maroon — signature accent */
  --cream: #F7F4EC;
  --ink: #23291F;

  /* Derived tones */
  --green-deep-2: #0E4A22;
  --green-tint: #e3efe7;
  --water-2: #05516e;
  --water-tint: #e1eef3;
  --maroon-2: #7a2753;
  --maroon-tint: #f6e7ef;
  --cream-2: #efe9da;
  --ink-soft: #4e5548;
  --line: #e2ddd0;
  --white: #ffffff;

  /* Type + layout */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1120px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 6px 24px rgba(35, 41, 31, 0.08);
  --shadow-lg: 0 14px 40px rgba(35, 41, 31, 0.12);
  --gap: clamp(1rem, 2vw, 1.5rem);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--maroon); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; color: var(--green-deep-2); }
h1 { font-size: clamp(2rem, 4.6vw, 3.25rem); letter-spacing: -0.5px; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); letter-spacing: -0.3px; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2rem); }
.narrow { max-width: 760px; margin-inline: auto; }
.narrow-left { max-width: 760px; }
.center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: .8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  border: 2px solid transparent;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--green-deep); color: var(--white); }
.btn-primary:hover { background: var(--green-deep-2); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.7); }
.btn-ghost:hover { background: rgba(255,255,255,.14); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: flex; align-items: center; gap: .6rem; color: var(--green-deep-2); }
.brand:hover { text-decoration: none; }
.brand-mark { height: 42px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-text strong { font-size: 1.15rem; letter-spacing: .5px; color: var(--maroon); }
.brand-text em { font-style: normal; font-size: .72rem; letter-spacing: 3px; text-transform: uppercase; color: var(--maroon); opacity: .8; }

.primary-nav { display: flex; align-items: center; gap: .35rem; }
.primary-nav a {
  color: var(--ink); font-weight: 500; font-size: .95rem;
  padding: .5rem .7rem; border-radius: 8px;
}
.primary-nav a:hover { text-decoration: none; background: var(--green-tint); color: var(--green-deep-2); }
.primary-nav a.active { color: var(--green-deep-2); background: var(--green-tint); }
.primary-nav a.nav-cta { background: var(--green-deep); color: var(--white); }
.primary-nav a.nav-cta:hover { background: var(--green-deep-2); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--green-deep-2); border-radius: 2px; transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; color: var(--white); overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(6,102,138,.6), transparent 60%),
    radial-gradient(800px 500px at 0% 110%, rgba(47,138,72,.5), transparent 55%),
    linear-gradient(135deg, var(--green-deep-2), var(--green-deep) 55%, #0a4a63);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: url("../assets/hero.svg");
  background-size: cover; background-position: center bottom;
  opacity: .5;
}
.hero-inner { position: relative; z-index: 1; padding: clamp(4rem, 11vh, 8rem) 0 clamp(4rem, 10vh, 7rem); max-width: 820px; }
.eyebrow { text-transform: uppercase; letter-spacing: 2.5px; font-size: .72rem; font-weight: 700; color: rgba(255,255,255,.82); margin-bottom: 1rem; }
.hero h1 { color: var(--white); margin-bottom: 1.1rem; }
.hero-lead { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: rgba(255,255,255,.92); max-width: 620px; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; }

/* ---------- Sections ---------- */
.section { padding: clamp(3.25rem, 8vh, 6rem) 0; }
.section-alt { background: var(--white); }
.section-eyebrow { text-transform: uppercase; letter-spacing: 2.5px; font-size: .72rem; font-weight: 700; color: var(--maroon); margin-bottom: .5rem; }
.lead { font-size: 1.15rem; color: var(--ink-soft); }
.lead.center { max-width: 760px; margin: 0 auto 2.5rem; }
.subhead { margin-top: 2.5rem; color: var(--green-deep-2); display: flex; align-items: center; gap: .6rem; }

/* ---------- Approach cards ---------- */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 1rem; }
.card {
  background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.75rem; box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease;
}
.section-alt .card { background: var(--cream); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center;
  background: var(--green-tint); margin-bottom: 1rem;
}
.vertical-card h3 { color: var(--green-deep-2); }
.vertical-card ul { margin: 0; padding-left: 1.1rem; color: var(--ink-soft); }
.vertical-card li { margin-bottom: .5rem; }

/* ---------- Capability ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin: 1.5rem 0 2.5rem; }
.stat {
  background: linear-gradient(160deg, var(--green-deep), var(--green-deep-2));
  color: var(--white); border-radius: var(--radius); padding: 1.6rem; text-align: center;
  box-shadow: var(--shadow);
}
.stat-num { display: block; font-size: 2.5rem; font-weight: 800; line-height: 1; letter-spacing: -1px; }
.stat-unit { font-size: 1.1rem; font-weight: 600; margin-left: 2px; opacity: .85; }
.stat-label { display: block; margin-top: .6rem; font-size: .9rem; color: rgba(255,255,255,.9); }
.capability-body p { color: var(--ink-soft); }
.themes-label { font-weight: 600; color: var(--ink); margin-bottom: .5rem; }
.chips { list-style: none; padding: 0; margin: 0 0 1.5rem; display: flex; flex-wrap: wrap; gap: .5rem; }
.chips li {
  background: var(--water-tint); color: var(--green-deep-2); border: 1px solid #cfe4e9;
  padding: .35rem .85rem; border-radius: 999px; font-size: .88rem; font-weight: 600;
}

/* ---------- People ---------- */
.people-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 1.25rem; }
.person {
  background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow);
}
.section-alt .person { background: var(--cream); }
.avatar {
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  background: var(--green-leaf); color: var(--white); font-weight: 700; font-size: 1.15rem;
  letter-spacing: .5px; margin-bottom: .9rem;
}
.person h4 { font-size: 1.1rem; margin-bottom: .15rem; color: var(--green-deep-2); }
.person-role { font-size: .85rem; font-weight: 600; color: var(--water); margin-bottom: .75rem; }
.person-bio { font-size: .93rem; color: var(--ink-soft); margin-bottom: .5rem; }
.person-bio.clamp {
  display: -webkit-box; -webkit-line-clamp: 5; -webkit-box-orient: vertical;
  overflow: hidden;
}
.person-bio.expanded { display: block; -webkit-line-clamp: unset; overflow: visible; }
.read-more {
  background: none; border: 0; color: var(--maroon); font-weight: 600; font-size: .88rem;
  cursor: pointer; padding: 0;
}
.read-more:hover { text-decoration: underline; }

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3rem); margin-top: 1rem; }
.project-list { list-style: none; padding: 0; margin: 0; }
.project-list li {
  padding: 1rem 0 1rem 1.25rem; border-left: 3px solid var(--green-tint);
  margin-bottom: .25rem; color: var(--ink-soft);
}
.project-list li strong { color: var(--ink); }
.project-list li:hover { border-left-color: var(--green-leaf); }
.tag { font-size: .68rem; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; padding: .2rem .55rem; border-radius: 6px; }
.tag-present { background: var(--green-deep); color: var(--white); }
.tag-past { background: var(--cream-2); color: var(--ink-soft); }

/* ---------- Documents ---------- */
[hidden] { display: none !important; }
.doc-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .75rem; }
.doc-link {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--ink); box-shadow: var(--shadow);
}
.doc-link:hover { text-decoration: none; border-color: var(--green-leaf); transform: translateY(-2px); transition: .2s; }
.doc-icon { background: var(--green-deep); color: var(--white); font-size: .7rem; font-weight: 800; padding: .45rem .5rem; border-radius: 6px; }
.doc-name { font-weight: 600; display: block; }
.doc-sub { font-size: .82rem; color: var(--ink-soft); }
.doc-empty {
  margin-top: 1.5rem; padding: 2.25rem; text-align: center;
  background: var(--white); border: 1px dashed var(--line); border-radius: var(--radius);
  color: var(--ink-soft);
}
.doc-empty p { margin: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); margin-top: 1.25rem; }
.contact-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow); }
.contact-card h3 { color: var(--green-deep-2); }
.contact-card address { font-style: normal; color: var(--ink-soft); line-height: 1.8; }
.contact-card a { font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer { background: var(--green-deep-2); color: rgba(255,255,255,.85); padding: 2.5rem 0; }
.footer-inner { text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--white); margin-bottom: .75rem; }
.footer-logo-badge { background: var(--white); border-radius: 10px; padding: 6px 10px; display: inline-flex; }
.footer-logo-badge img { height: 26px; width: auto; display: block; }
.footer-note { font-size: .9rem; margin-bottom: .35rem; }
.footer-copy { font-size: .85rem; color: rgba(255,255,255,.65); margin: 0; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards-3, .stats, .people-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid, .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--cream); border-bottom: 1px solid var(--line);
    padding: .5rem 1rem 1rem; box-shadow: var(--shadow-lg);
    display: none;
  }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: .85rem .5rem; border-radius: 8px; }
  .primary-nav a.nav-cta { text-align: center; margin-top: .35rem; }
}

@media (max-width: 560px) {
  .cards-3, .stats, .people-grid { grid-template-columns: 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .doc-link:hover { transform: none; }
}